Side bearing



Nov. 8, 192 7a A J. F. OCONNOR SIDE BEARING Filed July 9. 1925automatically self-centered under the in fluenceof vgravity whenrelieved of load and' Without the interposition of any means likely v byto central position.

Patented Nov. S, i927.

i nire ferne W. H. vriivnainc., aooaronnfiion'orYBEKLAWARE. y

'n Sinn Bearand.

Application filed July 9,

This invention relates to improvements in side bearings.

An7 object ofthe invention is to provide a ,side bearing especiallyadaptedv fory railway oars wherein Athe anti-friction .element is to getout of Vorder-sucli as springs.

' More speciiicallv, the' object of "my invention is to provide ananti-friction bearing adapted for attachment to body holsters .of

ycars :and wherein are 'employed an 'anti-friction rol-ler 'and cradlesfor supporting the roller so arranged that, When the' parts .have beenmoved to eitherside of central normal positiomthe center of gravityofthe cradles and "of the roller Will be atsuch points as toautomatically influencethe return of the supp yond the rollerandsupported'inthe cradles f' C, as shown in `Figure 3.- The. side Wallsilporting cradles With the rolle'r carried there- .In Athedravvin'gforminga part vof this specification, Figure 1 is avertical 'sectionale4 y theparts are elevated and lbefore then/'ear plate 17 is inposjition.

view taken through the ends of the body: and truck holsters of a carshowing my improvements in connectioi-iltherevvith. In thisl Figure thedotted lines indicate the 'extreme position assumed by the parts whenmoved toward the right, as viewed in Figure 1.

YFigure 2 isl a bottom pla-n View of the construction illustrated inFigure 1. And Fig-- ure 3 is a vertical sectional view correspondingsubstantially to the section line 3-3 of Figure 1.

In sail drawings, 10 denotes the upper portion of a truck bolster and 11the under side of an opposedbody bolster. In the drawing, the improved.side bearing is shown vattached to the body bolster 11., said improvedbearing comprising, broadly, 'a 'retainer or housing'casting A; ananti-friction element proper B; and a pair of supporting n cradles C--C.y

The housing or retaining member fr is preferably in the form of a hollowbox-like casting having an upper iiat Wall 12, depending vertical sideWalls 13-13 and curved end Walls 14.-14, the housing being open at thebottom, as clearly shown in Figures and 3. The' housing A is providedwith suitable lugs 15-15 by which the housing is secured to the bodybolster as by the rivets 1G. Preferably, a hardened Wear plate 17 isemployed on the inner side of the housing A to form the upper bearingsurface proper,

i923. sei-iai ivo. 650,208.

zontally disposed iiang'es 2,0-20, the latter .1

having arched` or conveXed upper-,bearing surfaces 21 forabout'two-thirds ofthe Width of the flanges and series of ,teeth 22-,22for the remaining approximately one-third'vvidth of the ian'ges, theteethbeing disposed 'nearest the anti-friction element B.

The anti-frictionele'ment B, as shown, is

.v preferably in theform of a tr'ue cylinder and has a central apertureto accommodate the f are suitably apertured, as indicated; at 24, topermit the insertion of thefpin-23 when n rihe two cradlesiCzare of likeconstruetion andveach is of elliptic `form with an upperconvex surface25 and a lovver conveX bearing surface 26.l The bearing sur- I faces26of the cradles roll upon the opposed oppositely conveXed bearingsurfaces A21 of the housing A. Also, on the lovver face eachcradle .C isprovided with an arcuate series of teeth 27 which co-operate With thecorrespondingly adjacent series 'of teeth 22 on the housing A. As Willbe apparent from an inspection of Figure 1, it Will be noted thatv thepin 23 is accommodated in openings in the cradle C which are disposedslightly above the geometrical center of the cradles.

LVhen the side bearing is brought into action, the aiiti,-frictioneleinentB will first be slightly raised. until itis in engagement ywiththe upper bearing surface provided lou movement between the tivobolsters taires Y As the roller is thus moved to one side ofcentral'position, theA cradles C are rocked Vabout their own convexbearing surfaces v member.

and on the convex bearing surfaces of the housing A until the cradlesreach a position such as indicated bythe dotted line CC in Figure l. Inthis position of the parts, it Will be noted that the points of supportbe# tween the cradle C and the supporting surfaces 2l of the housing Aare approximately at the place indicated by the reference character 25in Figure 1. These points'of support are obviously to the right of thecenter or axis of the roller B and to the right of the center of gravityof the cradles C. In this connection, it will be observed that thecenters of gravity of the cradles C Will be slightly to the left of theaxis of theV roller B when the parts are in the position shown by thedotted lines in Figure l, due to the f factthat the axis of the rollerisabove the geometrical center of the cradles, as heretofore described.With this condition, if the vload is removedfrom the anti-frictionelement, there is an immediate tendency for the cradles to rock back totheir central normal position carrying the anti-friction elementtherewith, all under the influence of gravity, and thereby returning theparts to normal position and in a condition ready to receive the nextactuation. During this return action, it is obvious that theco-operating sets of teeth ,Will vserve to prevent slippage of thecradles on the supporting flanges and to always maintain the relativerelation desired between the cradles and the retaining Although I haveherein shown and described whatI now consider vthe preferred maintain a.state of equilibrium cent-rally with reference toV said container; 4andan anti-friction elementy balanced about its axis andY pivotallysupportedat a central point on said cradles 2. Ina side bearing, thecombination with a housing adapted to be secured toa bolster, saidhousing having opposed supporting flanges,l each having an archedsupporting bearing surface; `of a pair of cradles, each cradleVvhaving'a lower curved bearing surface adapted to roll upon the corre-vspondingly arched supporting vsurface of said flange, said cradle beingcounterbalanced to normally maintain a state of equi g librium centrallyWith reference to said bearing; and an anti-friction roller balancedabout its axis and pivotally supported a on said cradles centrallythereof;y f 1 In witness that Ixclaim the foregoing I have hereuntosubscribed my name this'Gth day of July, 1923.

JOHN F. oooruvoia;v

